[asterisk-users] Possibility to catch DTMF when 2 users are in a conversation

[Leo Ann Boon]

>
> exten => 1234,1,Dial(SIP/1234)
> exten => 5678,1,Dial(SIP/5678)
>
> The SIP phones (X-lite) are configured to send DTMF's using RFC 2833 
> mechanism.
>
> I want to know if it is possible in Asterisk to catch a DTMF event 
> sent by one of the phone to trigger an action, for example to play a 
> sound/video clip to one of the phones.
google for features.conf, But you'll need to keep asterisk in the 
callpath, i.e. canreinvite=no, otherwise the RFC2833 DTMF codes will 
only be sent between the end points. If you need to reinvite, then you 
might have to try using SIP-INFO for DTMF instead of RFC2833.

Leo